Simpson Strong-Tie APHH610R Concealed Flange Heavy Joist Hanger for 6x10 Rough Cut Joists - Black Powder Coat, ZMAX | Fasteners IncludedNotice This connector is designed for Rough Cut lumber NOT nominal lumber (most common). This will only fit a joist that measures an actual 6x10". If you have a nominal joist measuring 5 1 2 x 9 1 2" you will need an APHH610 Ornamental Joist Hanger with Required Fasteners. The Simpson Strong Tie APHH610R Concealed Flange Heavy Joist Hanger offers superior strength and a clean, concealed appearance for connecting 6x10 rough cut beams to headers and